The 2nd IOF Workshop on Gun Violence: A Statistical Approach

Friday, May 10 & Friday May 17, 2024, 1 pm - 4:30 pm ET

Quick Links:

Agenda (Abstracts + Speaker Bios)



Call for presentations:

We are inviting additional presentations for the two-day virtual workshop, in addition to the invited speakers already on the Agenda.  Speakers will have 15 minutes to present on related topics.   

Please provide a title for your presentation, a 100-150 word abstract, and a list of authors with links to their bio-sketchs:  

Title:___ / Abstract:___ / Author(s):___ /   

Please reach out to if you are interested in submitting an abstract.

Registration Fees:

  • Affiliates with a company email address, free and added to the Zoom speaker list.  - please reach out to for promo code to register.
  • Speakers, no charge by sending them a speaker invitation 
  • Student Discount: 50% off with Promo Code - please reach out to for this code.
  • General public $35.00 

Register on Eventbrite Here!


Join us for the 2nd IOF Workshop on Gun Violence: A Statistical Approach, where experts, researchers, policymakers, and activists converge to discuss the multifaceted issue of gun violence through a statistical lens. This workshop serves as a platform for sharing cutting-edge research, data-driven insights, and actionable strategies aimed at addressing one of society's most pressing challenges.Through a series of presentations, panel discussions, and interactive sessions, participants will delve into various aspects of gun violence, including its prevalence, trends, underlying causes, and impacts on communities. By leveraging statistical methodologies and analytical approaches, attendees will gain a deeper understanding of the complex dynamics surrounding gun violence and explore evidence-based solutions to mitigate its devastating effects.


Experienced researchers in gun violence and criminology were invited to attend the Inaugural Statistics Serving Society (S3) Forum held on June 26 and 27, 2019 to discuss the trends and issues related to the violence of gun use. The workshop program suggested that there are many problems but not sufficient numbers of involved statisticians. The principal purpose of the Forum was to expose the opportunities and needs for statistical efforts and to engage a substantial number of statisticians to work across disciplinary lines to help in understanding and mitigating the effects of gun violence. The forum was broken into five topic areas: Emerging Data Sources, Gun Violence Trends, Policing Gun Violence, Assessing Gun Violence Risks and Evaluating Initiatives, and Police Shootings.

Gun violence is a vexing problem in the U.S. which necessarily justifies this scrutiny.  In honor of Ingram Olkin (1924-2016), a principal founder of NISS and an internationally prominent statistician whose work stressed the importance of statistical thinking in studying major societal problems, NISS is proud to be the sponsor of the Ingram Olkin S3 Forums. These Forums are aimed at engaging scientists and stakeholders in addressing the compelling issues facing contemporary society and exploring the roles that statisticians and data scientists can bring to address these issues.

Resource Links:

Part 1 Forum - June, 2019 - News : "Statisticians Focus on Data Related to Gun Violence at Inaugural Ingram Olkin Forum" (Program)

White Paper: "A Call for Statisticians to Engage in Gun Violence Research" (Ridgeway, Greg, Rosenberger, James and Xue, Lingzhou - October, 2020)

Publication: Greg Ridgeway, James L. Rosenberger & Lingzhou Xue (2021) "Statisticians Engage in Gun Violence Research", Statistics and Public Policy, 8:1, 73-79, DOI: 10.1080/2330443X.2021.1978354

IOF Committee liaison, Lingzhou Xue


Day 1: Friday, May 10, 2024 1–4:30 pm ET

1:00 - 1:05 pm - Opening Remarks 


1:05 pm - Session 1:  Emerging and Evolving Data Sources for Studying Gun Violence 

Susan Parker (Northeastern) “Non-fatal Firearm Injury Surveillance in the U.S.: An Update” 

Charles Loeffler (University of Pennsylvania) “Using recovered ammunition to study constraints in the supply chain for gun violence” 

Iris Horng (University of Pennsylvania) “Probabilistic Record Linkage of Two Gun Violence Data Sets” 

Chair/Discussant:  Wayne Osgood (Penn State) 


2:05 pm - 5 Minutes Break 


2:10 pm - Session 2:  Patterns in Police Use of Force 

Lucas Mentch (Pitt) “Racial disparities in fatal police shootings” 

Marie Oullet (GSU) “Bent Badges and Bullets: Unpacking Gun Violence Through Networks 

Justin Nix (Nebraska) “Open-source data quality on police shootings” 

Chair/Discussant:  Claire Kelling (Carleton College)


3:15 pm - 5 Minutes Break 


3:20 pm - Session 3:  Causal Modeling of Gun Violence Policies 

Avi Feller (Berkeley) / Eli Ben-Michel (CMU) “Statistical methods to estimate the impact of gun policy on gun violence” 

Bijan Niknam / Liz Stuart (JHU) “Design choices that involve small undefined geographic areas”

Dan Lawrence / Eric Piza (CNA/SIUE/UMD) “Assessing the Impact of Gunshot Detection Technology: Methodologies, analytical approaches, and insights" 

Chair/Discussant: Rosanna Smart (RAND) 


Day 2: Friday, May 17, 2024 1–4:30 pm ET  

1:00 pm - Session 4: Point Process Modeling of U.S. Gun Violence 

George Mohler (BC) “Changes in the reproduction number of mass shootings in the United States following the COVID-19 pandemic” 

Andrew Holbrook (UCLA) “Computing hawkes processes for gun violence research.” 

Yao Xie (Georgia Tech) “Gun violence incidence modeling through non-stationary spatial-temporal self-exciting point processes” 

Chair/Discussant:  Lingzhou Xue (Penn State) 


2:00 pm - 5 Minutes Break 

2:05pm - Session 5:  Zoom Breakout Room Discussions 

30 Minutes Discussion, 30 minutes Reports

Breakout Room Topics (tentitive):

  • Emerging and Evolving Data Sources for Studying Gun Violence
  • Patterns in Police Use of Force
  • Causal Modeling of Gun Violence Policies
  • Point Process Modeling of U.S. Gun Violence

After the breakout discussions, groups will report highlights. 


3:10pm ET - Session 6:  Miscellaneous Gun Violence papers 

David Corliss "Statistical Analysis of School Shootings in the United States as Stochastic Terrorism"

Jonathan Jay (Boston U) "Using machine learning and aerial imagery to enhance research on the built environment and community firearm violence"

Max Kapustin "We’re Building Something Here: Reducing Gun Violence Without Exacerbating the Harms of Policing in Baltimore’s Western District"

Chair/Discussant:  Claire Kelling (Carleton) 

Organizing Committee 

Charles Loeffler, University of Pennsylvania 

Jim Rosenberger, Penn State University 

Lingzhou Xue, Penn State University


About the Ingram Olkin Forum: Statistics Serving Society (S3) Series

Ingram Olkin Forums (IOF) are a series of forums to honor the memory of Professor Ingram Olkin presented by the NISS IOF committee Statistics Serving Society (S3).  

Each forum focuses on a current societal issue that might benefit from new or renewed attention from the statistical community. The S3 Forums aim to bring the latest innovations in statistical methodology and data science into new research and public policy collaborations, working to accelerate the development of innovative approaches that impact societal problems. As the Forum will be the first time a particular group of experts will be gathered together to consider an issue, new energy and synergy is expected to produce a flurry of new ideas and approaches.

Visit the IOF page for more information: 

Event Type


National Institute of Statistical Sciences


$35 General Admission


Zoom Webinar
United States